Abyssocottus korotneffi is a species of ray-finned fish belonging to the family Cottidae, the typical sculpins.

These sculpins are endemic to Lake Baikal in Russia.

Males can reach a maximum total length of 12.6 cm (5.0 in) and females 13.2 cm (5.2 in).

Females harbour about 20 eggs in each ovary.

[2] A. korotneffi feeds predominantly on debris and amphipod crustaceans.